Abstract:
Compositions and methods are included for preparing a hairy polymeric nanoparticle including first and second shell block polymer arms are at least partially phase-separated and surround a polymeric core. One type of polymeric arm can have a greater polarity than the other type(s) of polymeric arms. A rubber composition including the hairy nanoparticles is also provided.
Abstract:
A method is provided for synthesizing a core-shell nanoparticle that includes the following steps: providing a polymeric seed (in a solvent) that includes mono-vinyl monomer cross-liniked with a cross-linking agent to form the core of the nanoparticle, the core has an average diameter of from about nanometers to about 10,000 nanometers, and the core has polymer chains with living ends; adding a stabilizer to stabilize the seed and prevent the seed from precipitating out of solution; and grafting a shell species onto the living ends of the core to form the shell of the nanoparticle. A core-first synthesized nanoparticle, along with a rubber composition and tire product are also provided.
Abstract:
To provide a multilayer structure that may adhere to rubber material without the necessity of providing an adhesive layer, an inner liner and a pneumatic tire using the multilayer structure. According to the present invention, a multilayer structure 1 is formed by alternately laminating elastomer layers 3 containing thermoplastic elastomer and barrier layers 2 containing a gas barrier resin, wherein an outermost layer 4 laminated uppermost among layers constituting the multilayer structure 1 contains an elastomer component that may heat-adhere to diene rubber.
Abstract:
The present invention provides a rubber sheet having a thickness of 500 μm or less, wherein a rubber component in a rubber composition to constitute the rubber sheet contains a liquid elastomer having a weight-average molecular weight of from 500 to 100000, and a method for producing a rubber sheet having a thickness of 500 μm or less, which includes a step (A) of forming a film of a rubber composition not containing an organic compound having a boiling point not higher than 150° C., on a substrate sheet at a temperature at which the viscosity of the rubber composition falls within a range of from 10 to 100000 mPa·s. Using the specific liquid elastomer, the present invention provides a rubber sheet having a thickness of 500 μm or less. Not using any special coating apparatus, the present invention provides a method for producing a rubber sheet of a rubber composition not containing an organic compound having a boiling point not higher than 150° C.
Abstract:
A method is provided for synthesizing a core-shell nanoparticle that includes the following steps: providing a polymeric seed (in a solvent) that includes mono-vinyl monomer cross-liniked with a cross-linking agent to form the core of the nanoparticle, the core has an average diameter of from about nanometers to about 10,000 nanometers, and the core has polymer chains with living ends; adding a stabilizer to stabilize the seed and prevent the seed from precipitating out of solution; and grafting a shell species onto the living ends of the core to form the shell of the nanoparticle. A core-first synthesized nanoparticle, along with a rubber composition and tire product are also provided.
Abstract:
Compositions and methods are included for preparing a hairy polymeric nanoparticle including first and second shell block polymer arms are at least partially phase-separated and surround a polymeric core. One type of polymeric arm can have a greater polarity than the other type(s) of polymeric arms. A rubber composition including the hairy nanoparticles is also provided.
Abstract:
A method is provided for making nanoparticles, including the steps of: combining a hydrocarbon solvent and an aprotic, polar co-solvent, a mono-vinyl aromatic monomer, polymerization initiator, a solution stabilizer, and a first charge of a cross-linking agent. Subsequently, a second charge of cross-linking agent is added. The nanoparticles have an average diameter of 5 nanometers to about 10,000 nanometers. Spherical nanoparticles are also provided that include a cross-linking agent comprising 30% to 60% by weight of the combined weight of a mono-vinyl aromatic species and the cross-linking agent. The spherical nanoparticles also meet the following equation: 0.90≦(D1/D2)≦1.1 wherein D1 is a first diameter of a nanoparticle and D2 is a second diameter of the nanoparticle, and D1 and D2 intersect at right angles.
Abstract:
Provided is a laminate for inner liner which uses a resin film in which adhesiveness between an adjacent member such as a carcass and a resin film can be sufficiently secured and a tire using the same. The laminate is a laminate for inner liner including: a gas barrier layer 1 comprising a resin material which is composed of a thermoplastic resin or a mixture of a thermoplastic resin and a thermoplastic elastomer; and rubber layers 2A, 2B each arranged on each of both sides of the gas barrier layer. The rubber layer contains at least a diene elastomer, the diene elastomer is modified by a compound including a functional group having an affinity for the resin material, and at least one of the rubber layers contains a cross-linking agent.